Garrett Mock | Starting Pitcher

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Diamondbacks released RHP Garrett Mock.

Mock signed a minor league contract with the Diamondbacks last November and went on to post a 6.72 ERA and 1.76 WHIP across 75 innings this season at Triple-A Reno. The 30-year-old right-hander will presumably try to latch on with a new organization. Mon, Aug 19, 2013 11:09:00 AM

Diamondbacks signed RHP Garrett Mock to a minor league contract.

He'll also get a spring training invite. Mock, who was originally drafted by the Diamondbacks, posted a 3.79 ERA and 68/28 K/BB ratio over 61 2/3 innings at the Triple-A level between the Red Sox and Astros. The 29-year-old right-hander hasn't pitched in the majors since 2010 as a member of the Nationals and will likely struggle to win a roster spot with the D-Backs. Wed, Nov 7, 2012 09:25:00 AM

Mock signed with the Blue Jays in December, but became a free agent after being cut in February. The 28-year-old right-hander posted an ugly 6.28 ERA and 32/24 K/BB ratio over 12 starts and four relief appearances last season with the Nationals' Triple-A affiliate. He has been assigned to minor league camp. Fri, Mar 2, 2012 05:55:00 PM

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He'll also get a spring training invite. Mock, who was originally drafted by the Diamondbacks, posted a 3.79 ERA and 68/28 K/BB ratio over 61 2/3 innings at the Triple-A level between the Red Sox and Astros. The 29-year-old right-hander hasn't pitched in the majors since 2010 as a member of the Nationals and will likely struggle to win a roster spot with the D-Backs.

Mock signed with the Blue Jays in December, but became a free agent after being cut in February. The 28-year-old right-hander posted an ugly 6.28 ERA and 32/24 K/BB ratio over 12 starts and four relief appearances last season with the Nationals' Triple-A affiliate. He has been assigned to minor league camp.

Mock, 28, posted an ugly 6.28 ERA and 32/24 K/BB ratio over 12 starts and four relief appearances this season with Triple-A Syracuse in the Nationals' organization. It's not a surprising destination for the former prospect given that former Nationals scouting director Dana Brown is now working with Toronto.

Mock was designated for assignment last week as the Nationals made room on their 40-man roster for September call-ups. The 28-year-old right-hander had an ugly 6.28 ERA and 32/24 K/BB ratio over 12 starts and four relief appearances at the Triple-A level this season.

The Nats needed to do some housecleaning with some of the September call-ups, so Mock was given the boot. The 28-year-old right-hander had an ugly 6.28 ERA and 32/24 K/BB ratio over 12 starts and four relief appearances at the Triple-A level this season.

Both came to camp with a shot to win a spot in the Nationals bullpen, and although Carr pitched well (no runs allowed in four innings), Mock was horrendous (9.64 ERA, 1/6 K/BB ratio in 4 2/3 innings). They'll represent right-handed depth at Triple-A.

Garret Mock walked three and was charged with five runs -- one earned -- in two-thirds of an inning against the Cardinals on Thursday.

Mock lost most of 2010 to a cervical spine injury, and he's no longer in the Nationals' rotation picture after breaking camp as the fifth starter last year. At this point, he's probably a long shot to win a spot in middle relief.

Mock was placed on the disabled list after his first start due to a cervical spinal disc injury, though he is "confident" that he is getting better. Still, there's no timetable in place for his return and the Nationals don't seem keen on rushing him back.

According to Nationals general manager Mike Rizzo, right-hander Garrett Mock (neck) felt a twinge during a bullpen session on Monday.

"We sent him to D.C. to get it checked out," said Rizzo. "It turns out he had something in his upper back that was causing the shoulder. It's a disc thing that put pressure on the nerve. He thought it was his shoulder, but it was actually (radiating) from his neck." It's not known when he'll be able to resume baseball activities.

Depth Charts

Oscar Hernandez is expected to miss 6-8 weeks with a fractured left hamate bone.

Hernandez hurt the hand Tuesday, and he's going for surgery Thursday to have the bone repaired. It's a small blessing in disguise for the Diamondbacks, who now have a few more weeks to decide whether to keep the Rule 5 pick on their 25-man roster. The 21-year-old's injury could open the door for prospect Peter O'Brien to break camp with the club, but nothing has been decided yet.

Chris Owings went 2-for-3 with a double and a triple as the Diamondbacks topped the Indians 3-2 in Cactus League action.

Even with the two-hit attack though, Owings is hitting just .222 (6-for-27) with no homers and five RBI on the spring, and could be in danger of losing his job to Nick Ahmed. The 23-year-old possesses an intriguing blend of power and speed, but will have to remain on the field to carve out mixed league value this season.

Arroyo underwent Tommy John elbow surgery last July and probably won't be an option for the Diamondbacks until sometime in August. The veteran right-hander is due $9.5 million this season and carries an $11 million club option (or $4.5 million buyout) for 2016.

Patrick Corbin (elbow) threw a bullpen session Tuesday for the first time since Tommy John surgery last March.

Corbin, who is now exactly one year removed from the surgery, said it was "awesome" and "exciting." The 25-year-old southpaw still has to move from bullpens to facing hitters and then game action, so he has a while to go in his rehab process, but he could join the D-Backs' rotation around June if all goes well. Corbin had a 3.41 ERA over 32 starts in 2013 and made the National League All-Star team.

Addison Reed is altering his delivery as a means to reduce stress on his shoulder.

Reed is working on not throwing across his body as much. "We're definitely not taking away going across my body," said Reed. "I've been doing that since I was in college. I'm still going to step across, but just not as far." The closer insists that he's feeling "100 percent," but the fact that he's tweaking his delivery in part to ease stress on his shoulder throws up a red flag. Reed has yet to appear in a Cactus League game but insists he'll be ready for Opening Day.

Ziegler required microfracture surgery on his left knee last September, but everything has gone according to plan with his rehab process. He shouldn't need too many outings to get ready for the season. The 35-year-old sidearmer had a 3.49 ERA and 54/24 K/BB ratio across 67 innings in 2014 and should serve as a set-up man for Addison Reed this season.

The Diamondbacks received good news on Friday when MRI results revealed no ligament damage in the elbow of reliever Matt Stites.

It's the second MRI that Stites has undergone as he had been bothered by a sore elbow since the beginning of spring camp. This one, as well as the first, revealed only inflammation. He's still likely to begin the season on the disabled list, but should be an option for the Diamondbacks bullpen early in the season.

David Hernandez (elbow) threw off a mound Tuesday for the first time since Tommy John surgery.

Hernandez had his Tommy John surgery last April, but he should be able to make it back to the Diamondbacks before teammate Patrick Corbin since he's a reliever. Barring any setbacks, he should return sometime in May.